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Philco 112 speaker to permanent magnet
dirkbuddy
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Posts: 39
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Joined: Feb 2014
City: Medicine Hat, Alberta canada
#11

03-24-2018, 07:49 AM
Thanks for the replies folks, I'm going to tackle removing the cone as per Radioroslyn suggestion when I have time here.  But getting back to my original question and the first post with my attached drawn up schematic,  IF i had to replace the speaker, say with a PM speaker, Would I have to A) Change the output transformer to one that will be able to drive a 6 ohm PM?  B) Replace the field coil with a 3.2 K resistor? If so what wattage?
C) Increase the 2nd Electro cap from 6uf to 12 uf?  D) Do I have to do anything with the filter choke?    am I on the right track here ?
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RE: Philco 112 speaker to permanent magnet - by dirkbuddy - 03-24-2018, 07:49 AM



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